Class: Homeseed::Connection

Inherits:
Object
  • Object
show all
Includes:
Logging
Defined in:
lib/homeseed/connection.rb

Direct Known Subclasses

Homeshick

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logging

configure_logger_for, global_level=, #logger, logger_for

Constructor Details

#initialize(params = {}) ⇒ Connection

Returns a new instance of Connection.

Raises:



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# File 'lib/homeseed/connection.rb', line 6

def initialize(params={})
  raise ConnectionError, 'servers and/or user not specified' unless params[:servers] and params[:user]
  @servers = params[:servers].split(',')
  @user = params[:user]
  @commands = []
  @logger = params[:logger] || logger

  if params[:has_password]
    cli = HighLine.new
    @password = cli.ask("Enter password: ") { |q| q.echo = false }
  else
    @password = params[:password] || ''
  end

  push_commands(params)
end

Instance Attribute Details

#has_password ⇒ Object (readonly)

Returns the value of attribute has_password.



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# File 'lib/homeseed/connection.rb', line 4

def has_password
  @has_password
end

#servers ⇒ Object (readonly)

Returns the value of attribute servers.



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# File 'lib/homeseed/connection.rb', line 4

def servers
  @servers
end

#user ⇒ Object (readonly)

Returns the value of attribute user.



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# File 'lib/homeseed/connection.rb', line 4

def user
  @user
end

Instance Method Details

#config_file_path(file) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 38

def config_file_path(file)
  File.expand_path("../../../config/#{file}", __FILE__)
end

#exec(params = {}) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 85

def exec(params={})
  if @servers.include?('localhost')
    local_exec
  else
    ssh_exec
  end
end

#local_exec ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 93

def local_exec
  commands = @commands.join('; ') + ';'
  @logger.info "localhost exec: #{commands}"

  Open3.popen2e('/bin/bash') do |stdin, stdout_err, wait_thr|
    @commands.each do |command|
      stdin.puts(command)
    end
    stdin.close
    while line = stdout_err.gets
      log_exec(line)
    end
  end
end

#log_exec(data) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 145

def log_exec(data)
  data_lines = data.split(/[\r,\n]/)
  data_lines.each do |data_line|
    unless data_line == ''
      if data_line.match(/error|failed|fatal/i)
        @logger.error data_line
      else
        @logger.info data_line
      end
    end
  end
end

#process_hash(commands, current_key, obj) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 68

def process_hash(commands, current_key, obj)
  if obj.is_a?(Hash)
    obj.each do |new_key, value|
      combined_key = [current_key, new_key].delete_if { |k| k == '' }.join(" ")
      process_hash(commands, combined_key, value)
    end
  elsif obj.is_a?(Array)
    obj.each do |value|
      combined_key = [current_key, value].delete_if { |k| k == '' }.join(" ")
      commands << combined_key
    end
  else
    combined_key = [current_key, obj].delete_if { |k| k == '' }.join(" ")
    commands << combined_key
  end
end

#push_bash_file(file) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 49

def push_bash_file(file)
  @file = file
  yml_commands = YAML.load_file(file)
  push_yml_commands(yml_commands)
end

#push_bash_files(files) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 42

def push_bash_files(files)
  @files = files
  @files.each do |file|
    push_bash_file(file)
  end
end

#push_commands(params = {}) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 23

def push_commands(params={})
  if params[:command]
    @commands.push(*params[:command])
  elsif params[:files]
    push_bash_files(params[:files])
  elsif params[:file]
    push_bash_file(params[:file])
  elsif params[:url]
    push_url_commands(params[:url])
  elsif params[:upload_files]
    @remote_path = params[:remote_path] || '/tmp/'
    @upload_files = params[:upload_files].split(',')
  end
end

#push_url_commands(url) ⇒ Object

Raises:



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# File 'lib/homeseed/connection.rb', line 55

def push_url_commands(url)
  response =  HTTParty.get(url)
  raise HTTPartyError unless response.code == 200
  yml_commands = YAML.load(response.body)
  push_yml_commands(yml_commands)
end

#push_yml_commands(yml_commands) ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 62

def push_yml_commands(yml_commands)
  commands = []
  self.process_hash(commands, '', yml_commands)
  @commands.push(*commands)
end

#scp_upload ⇒ Object

Raises:



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# File 'lib/homeseed/connection.rb', line 158

def scp_upload
  raise ConnectionError, 'cannot scp to localhost' if @servers.include?('localhost')
  @servers.each do |server|
    @upload_files.each do |upload_file|
      @logger.info "starting scp #{upload_file} #{@user}@#{server}:#{@remote_path}"
      begin
        Net::SCP.start(server, @user) { |scp| scp.upload!(upload_file, @remote_path) }
        @logger.info "finished scp #{upload_file} #{@user}@#{server}:#{@remote_path}"
      rescue => err
        @logger.error "scp FAILED #{err}"
      end
    end
  end
end

#ssh_exec ⇒ Object 



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# File 'lib/homeseed/connection.rb', line 108

def ssh_exec
  Hash[@servers.map do |server|
    commands = @commands.join('; ') + ';'
    @logger.info "ssh #{@user}@#{server} exec: #{commands}"

    exit_status = nil
    exit_signal = nil

    Net::SSH.start(server, @user, password: @password) do |ssh|
      ssh.open_channel do |channel|
        channel.exec("bash -l") do |ch,success|
          ch.send_data "#{commands}\n"

          ch.on_data do |c,data|
            log_exec(data)
          end

          ch.on_extended_data do |c,type,data|
            log_exec(data)
          end

          ch.on_request("exit-status") do |c,data|
            exit_status = data.read_long
          end

          ch.on_request("exit-signal") do |c,data|
            exit_signal = data.read_long
          end

          ch.send_data "exit\n"
        end
      end
    end
    [server, { exit_status: exit_status, exit_signal: exit_signal }]
  end]
end